$\text { Three forces with magnitudes } 80 \text { pounds, } 110 \text { pounds and } 25 \text { pounds act on an }$

question 84

Multiple Choice

$\text { Three forces with magnitudes } 80 \text { pounds, } 110 \text { pounds and } 25 \text { pounds act on an }$ object at angles $30 ^ { \circ } , - 70 ^ { \circ }$ , and $120 ^ { \circ }$ respectively, with the positive $x$ -axis. Find the direction and magnitude of the resultant force. (The choices below are given to two decimal places.)

• A) \(136.12\) pounds at an angle of \(- 66.16 ^ { \circ }\) with the positive \(x\)-axis
• B) \(103.21\) pounds at an angle of \(23.84 ^ { \circ }\) with the positive \(x\)-axis
• C) \(103.21\) pounds at an angle of \(- 66.16 ^ { \circ }\) with the positive \(x\)-axis
• D) \(136.12\) pounds at an angle of \(- 23.84 ^ { \circ }\) with the positive \(x\)-axis
• E) \(103.21\) pounds at an angle of \(- 23.84 ^ { \circ }\) with the positive \(x\)-axis

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